using RadicadeServer.RecNet.Avatar;
using Xunit;

namespace RadicadeServer.Tests;

/// <summary>
/// The catalog descriptions we hand the client must match the shape its own
/// AvatarItemWardrobeRuntimeConfig uses. Live RecNet records only ever carry
/// "guid," (no combination) or "guid,mat1,mat2," (materialised), never empty slots.
/// An empty slot makes the client log "Browsable avatar item not found" and drop the
/// item from the avatar, so these tests pin both the rewrite and its no-op cases.
/// </summary>
public class AvatarItemDescriptionTests
{
    [Theory]
    // The legacy "no combination" form loses its empty slots.
    [InlineData("8aa79563-ace1-4ba7-ad0c-f3210a78142f,,,", "8aa79563-ace1-4ba7-ad0c-f3210a78142f,")]
    [InlineData("_OWVy3z6iU-M3-zbQgSLig,,,", "_OWVy3z6iU-M3-zbQgSLig,")]
    // An empty slot in the middle of a material list is dropped, order is preserved.
    [InlineData("d0a9262f-5504-46a7-bb10-7507503db58e,95e4cc30-cb68-473d-a395-feadf5b51512,,0440f08f-ef1d-49d8-942b-523056e8bb45,",
        "d0a9262f-5504-46a7-bb10-7507503db58e,95e4cc30-cb68-473d-a395-feadf5b51512,0440f08f-ef1d-49d8-942b-523056e8bb45,")]
    // Surrounding whitespace is not part of the identifier.
    [InlineData(" 8aa79563-ace1-4ba7-ad0c-f3210a78142f,,  ", "8aa79563-ace1-4ba7-ad0c-f3210a78142f,")]
    // Well-formed descriptions are returned byte-for-byte, including the shapes live
    // RecNet writes and the trailing comma the client's own serializer omits.
    [InlineData("8aa79563-ace1-4ba7-ad0c-f3210a78142f,", "8aa79563-ace1-4ba7-ad0c-f3210a78142f,")]
    [InlineData("8aa79563-ace1-4ba7-ad0c-f3210a78142f,95e4cc30-cb68-473d-a395-feadf5b51512,05f0ee6e-c824-470e-9178-5ed576c6fe0c,",
        "8aa79563-ace1-4ba7-ad0c-f3210a78142f,95e4cc30-cb68-473d-a395-feadf5b51512,05f0ee6e-c824-470e-9178-5ed576c6fe0c,")]
    [InlineData("d84993dd-4e15-4481-9450-f88a34cdbc82,FnhttSsCoUCSAW8j-stC5A",
        "d84993dd-4e15-4481-9450-f88a34cdbc82,FnhttSsCoUCSAW8j-stC5A")]
    [InlineData("8aa79563-ace1-4ba7-ad0c-f3210a78142f,95e4cc30-cb68-473d-a395-feadf5b51512,05f0ee6e-c824-470e-9178-5ed576c6fe0c",
        "8aa79563-ace1-4ba7-ad0c-f3210a78142f,95e4cc30-cb68-473d-a395-feadf5b51512,05f0ee6e-c824-470e-9178-5ed576c6fe0c")]
    public void Normalize_ProducesClientShapedDescriptions(string input, string expected)
    {
        Assert.Equal(expected, AvatarItemDescription.Normalize(input));
    }

    [Fact]
    public void Normalize_IsIdempotent()
    {
        var once = AvatarItemDescription.Normalize("8aa79563-ace1-4ba7-ad0c-f3210a78142f,,,");
        Assert.Equal(once, AvatarItemDescription.Normalize(once));
    }

    [Fact]
    public void Normalize_LeavesMissingDescriptionsAlone()
    {
        Assert.Equal("", AvatarItemDescription.Normalize(""));
        Assert.Equal("", AvatarItemDescription.Normalize(null));
        Assert.Equal("", AvatarItemDescription.Normalize("   "));
        // A description with no item GUID at all is not something this can repair.
        Assert.Equal(",,,", AvatarItemDescription.Normalize(",,,"));
    }

    [Theory]
    [InlineData("8aa79563-ace1-4ba7-ad0c-f3210a78142f,,,", true)]
    [InlineData("8aa79563-ace1-4ba7-ad0c-f3210a78142f,", false)]
    [InlineData("8aa79563-ace1-4ba7-ad0c-f3210a78142f,95e4cc30-cb68-473d-a395-feadf5b51512,", false)]
    [InlineData("", false)]
    [InlineData(null, false)]
    public void HasEmptyMaterialSlot_DetectsOnlyLegacyRows(string? input, bool expected)
    {
        Assert.Equal(expected, AvatarItemDescription.HasEmptyMaterialSlot(input));
    }

    [Fact]
    public void CatalogParsingRepairsLegacyRows()
    {
        var items = AvatarUnlockCatalog.ParseCatalog("""
        [{"AvatarItemDesc":"8aa79563-ace1-4ba7-ad0c-f3210a78142f,,,","UnlockedLevel":0,"PlatformMask":-1,
          "FriendlyName":"Rec Room Shirt (V-Neck, White)","Rarity":0}]
        """);

        var item = Assert.Single(items);
        Assert.Equal("8aa79563-ace1-4ba7-ad0c-f3210a78142f,", item.AvatarItemDesc);
        Assert.Equal("Rec Room Shirt (V-Neck, White)", item.FriendlyName);
    }

    [Fact]
    public void KeepSupportedItemsRepairsLegacyRows()
    {
        var copy = Assert.Single(AvatarUnlockCatalog.KeepSupportedItems(
            [new AvatarItem { AvatarItemDesc = "_qXaNbm4yEeyalo372QbvA,,,", FriendlyName = "Biker Goggles" }]));

        Assert.Equal("_qXaNbm4yEeyalo372QbvA,", copy.AvatarItemDesc);
    }

    [Fact]
    public void ShippedCatalogNeverServesEmptyMaterialSlots()
    {
        var catalogJson = File.ReadAllText(Path.Combine(AppContext.BaseDirectory, "Fixtures", "avatar.json"));
        var items = AvatarUnlockCatalog.ParseCatalog(catalogJson);

        Assert.NotEmpty(items);
        Assert.DoesNotContain(items, item => AvatarItemDescription.HasEmptyMaterialSlot(item.AvatarItemDesc));
    }
}